#include <stdio.h>

int arr[] = { 1, 2, 3, 4, 5, 6 };
#define TOTAL_CNT (sizeof(arr) / sizeof(arr[0]))
int main() {
	int d = -1, x = 0;

	if (d < TOTAL_CNT) 
		x = arr[d + 1];
	printf("x:%d\n", x);

	if (d < (int)TOTAL_CNT) 
		x = arr[d + 1];
	printf("x:%d\n", x);
	
	if (-1 < (unsigned char) 1)
		printf("-1 < unsignec char 1::ture\n");
	else
		printf("-1 < unsignec char 1::false\n");

	return 0;
}

